<!-- 页面加载中, 去除fade属性避免加载动画时间, 解决动画加载中无法关闭loading的问题 -->
<div class="modal-dialog modal-dialog-centered" id="loadingModal" data-backdrop="static" data-keyboard="false"
    style="max-width: 200px; max-height: 200px; justify-content: center;">
    <div class="spinner-border text-light" style="width: 4rem; height: 4rem;" role="status">
        <span class="sr-only">Loading...</span>
    </div>
</div>